Plaster-board or the like



I. AND1. E. SCHUMACHER.

PLASTER BOARD 0R THE LIKE.

APPLICATION FILED MAY 22, Isls.

1,3275446, Patented J an. 6, 1920.

l plaster board or wall board, such plastic "Unire smarts 'traiteur orme;

i PLASTER-BOARD OR THE LIKE.

Specification of Letters Patent.

Patentes aan." e, ieee,

`Application ledMay 22, 1918. Serial No. 236,040.

To all whom t may concern:

Be it known that we, JOHN SCHUMACHER and JOSEPH E. SGHUMACHER, both citizens of the-United States, residing at Los Angeles, in the county of Los Angeles and iState -of California, have jointly invented new and useful Improvements in Plaster- Board or the like, of which the following. is' a s eciication. i Y

his invention relates to an improved article of manufacture, namely, wall board, plaster board, or the like, which is used in building construction in place of the ordinary lath or metal lath, and as a Wall elevment in and by itself, or a wall element to receive a finishing coat of plasterv or a covering of paper or any other finishing and surfacing material or substance suitable or preferable. Such plaster board or Wall board, in the usual or best practice, comprises a suitable composition disposed between surface or facial lsheets of paper orv other flexible material, and, as we make such substance or composition is supplied to andV between such facial sheets of paper or the like, and the sheets and the composition are united under pressure, and produced in any suitable or feasible lengths, which may be -cut up, shaped or subdivided as desired, and. given any particular conformation as best adapts them for purposes of decoration or to fit them to any particular design or scheme of construction. In order to insure perfect adhesion of the plaster or other facial coating applipd to such plaster board as stated, and to cause such facial coating to be retained in contact with the plaster board vwithout fracture or separation or buckling or displacement, it is a common practice to provide for the interlocking of such surface coverin or mass thereof with the plaster board. o this end, projections or protuberances are sometimes formed, standing out from the plaster board, and at .other times open-ings are formed in the plaster board, into which openings the plaster coating or Wall material may penetrate to form interlocking keys or studs. The projections or buttons or the like referred to protrude into the plaster material and act as interlocking buttons or studs. In any case, when the composition of the plaster board-is eX- posed to produce such buttons or projections or form such openings, even if it only be by 'cutting away the paper or other covering of the composition, the access of the moist plaster or Wall material tothe composition of the plaster board is permitted, and the moisture thereof tends to soften the composition of the plaster board between the two facial sheets, or such moisture even tends to penetrate the sheets themselves, and soften them and likewise soften the composition of the board, the result being that the -board is weakened and has a tendency tol bend or buckle or bulge or otherwise lose its true form, due to the Weight of the adhering plaster coating upon itv when soV softened or 4 weakened bythe invading moisture. This results in either a `failure of the plaster board, possibly even to the extent of its crumbling or breaking, or the plaster boards detachment from the building frame or studding, or the detachment of the plaster or wall material from the plaster board, or the bulging or warping or buckling or other disturbances of the proper condition of the plaster wall material. ATo prevent these objectionable occurrences and the possible failure of the wall board or plasr board to vstand up and hold up the plaster wall covlliikewise, it at times is found advantageous to also apply such moisture insulating oi` water-proofing substance to the paper sheets themselves which constitute the facial portions of the plaster board. ln this manner 'the moisture of the wall covering or plaster is entirely withheld from access to and invasion of the composition of the plaster board, and i'ii tlierlattei' instancel likewise withheld from.V penetration of the paper covering of the plaster board, and the plastei'. board or wall board retains its full unimpaii'ed strength and iiu'rintains its true and proper form, and is not softened or weakened in any manner, nor in any manner so softened or weakened as to permit it'to withdraw fi'oiii the building frame.

-ll"urtlierniore, this insulating or waterproong of the plaster board over its entire surface or over the exposed portions of the coin-position, or both, prevei'its the access to the composition of the plaster board of any moisture which may invade the wall coveiing itself even after it Ahas set and hardened and dried. rl`hus, the plastered walls of a building constructed with plaster board elements, vwould be able to withstand subjection to moisture from rainwater, fire hose or other source, and the Wall maintain its integrity.

The importance of thus preserving the Wall board or plaster board from invasion by moisture, in any manner, will be seen from the foregoing statements, ancd our in- I vention consists in the provision of a wall board or plaster board element, or the like,

suitably organized so that the composition' of the board is insulated against moisture, or water-proofed as stated.

The invention has for its objects the pro- Vision of an improved article of manufacture, consisting of plaster board, or wall board, which will be in Whole or partially Water-proofed as above pointed out, and which will be superior in point of relative inexpcnsiveiiess and simplicity of construction and organization, and convenience in manufacture, durability, length of life, frecdoni from disintegration, and Which will be generally superior in eiiiciency and serviceability. 1

With theabove and other objects in view, the invention consists in the novel and useful formation, construction, composition, organization and structure of parts, features, and of the 'whole,'all as hereinafter described, shown in the drawing, and finally pointed out in claims.

In the drawing:

Figure 1 is a fragmentary sectional View of a length or sheet ofplaster board insu.- lated against moisture or water-proofed in accordance with the presentinvention;

Fig. 2 is a similar view showing a modified 85.form of construction;

neer/,eac

llfig. 3 is a similar /vievv showing a still further modified form of construction;

Fig. d is a similar' view showing a still further 'modified form of construction;

Fig. 5 is a similar view showing a still further modified form of construction;

Fig., 6 is a facial plan view of the construction showin.7 in vFig. 5;

lf'ig. 7 is a View similar to Figs. l to 5 inclusive, showing a still further modified form of construction; and

Fig. 8 is a similar view showing a still further modified form of construction.

ln Figs. l, 2, 4, 7 and 8, the composition of the wall board or plaster board is shown as eut or broken away or recessed or penetrated to provide for invasion of the plaster or wall covering to cause same to interlock with the plaster board in key fashion.` ln lig. 3 the plaster board is shown as pro- --vided with a projecting stud to interlock with the plaster or wall covering. ln lriigs. 5 and 6 the paper covering ofthe plaster board is shown as cut or broken away to expose the insulated composition of the plaster board, and in Fig. 6 the paper covering is shown broken away in part to expose the composition of the board.

Corresponding parts in all the figures are designated by the same reference characters.

Referring with particularity to the drawing,`A in each instance designates vthe bod material or composition of the plaster boar( which may be of any preferred or suitable' organization, including a cementitious or 100 plastic substance admixed with an other material that'may be desired" to prot uce the proper body strength of the board and give it the necessary qualities. B in each instance designates the facial covering of paper or the like, between which coverings the plastic or ceinentitious or composition body A is disposed This may be applied' to one or both faces of the body A, land such-paper or surface covering and the body may be 'associated and brought, together and caused to imite or adhere in any suitable manner, as bypassingothc unstable 'body material to and between sheets of paper and limiting the entirety under the pressure of -suitable rollers. rl`hese matters are not material to the present invention which concerns a Water-proofing or moisture-insulating element C Which is applied to the plaster boa-rd Wherever the body or composition A is exposed, or is applied both to such exposed portions of the )ody and to the surface or paper covering B. In the foi-in shown in Fig. 1 the body A is recessed as at t) through from one face to the facial covering 'at the other face and the insulating material or` Water-proofing material is applied to all of the exposed body portions and to all exposed surfaces of t e surface coverings B, and to the edges or ends of the plaster vboard over the body to form a button or protuberance 11, and' Leanne body material A and to the entire walls ,of

the opening and the surface covering B. 1n'

the form shown in Fig. 3, the body material A is projected through the paper covering the water-proofing material is applied entirely over such button and over the facial coverings B. In the form shown in Fig. 4f a thgough opening 12 is provided and the' water-proofing material is applied as de-l scribed in connection with Fig. 2, with the exception that tongues or fingers 18 are provided at one end of the opening 12, being produced in cutting through thepa-per covering at'the respective side of the plaster board. 'In the form shown in Figs. 5 and 6 the paper at one face ofthe board is cut away as at 14: to expose the body material A, and such body material which is thus y. 'sa

initially exposed is covered with the-watenproong material C, as is the surface of each facial covering B.

ln Figs. 7 and 8 through ,openings 15 and 16 are shown provided in the plaster board,

and these are shown, roughened'so asy to provide particularly yeicient interlocking engagement with t-he plaster of the wall which invades such openings. rlhese roughened walls of the opening are covered with the water-proofing material C, all the way through the opening and the opening 16 in Fig. 8 is shown as slightly tapered to produce a' possibly more eiicient interlocking key action with the plaster.

t will be seen that in each of these forms the-body A, whereverl otherwise exposed, is

. co-vered with or treated with the moisture insulating or water-proofing material C, which may consist of water-proof paint, tar paint, rubber compositiomf or plaster or plastic material, water-proofed' byl any suitable process or inanysuitable manner. ln -certain forms, as in Fig. 1, the entire plaster board unit or element is shown as Water-proofed or moisture-insulated, over its entire surface and its ends, and edges, .and

. in itsrecess for interlocking with the wall covering, so that moisture is withheld 'from4 access to any part or surface of it. vrlihe degree ,of water-proofing, or the points or surfaces to which the water-proofing material is applied` or water-proofing treatment is given, may be varied as desired, in accordance with therequirements of the particular work or service of the plaster board or the particularnature of the covering orplaster,

Y andthe extent to which the water-proofing is eicient may be varied, so that the mois-y ture maybe excluded entirely or for a greater orlesser vperiod of time, as for installed-suciently to permit the plaster cov'A buildin frame, or cause it to warp or buckle or ben plaster covering to warp or buckle or bend or disintegrate or in turn cause the or disintegratel or fall or lose its properD smooth, fla-t appearance.

lt is manifest that many changes and variations and adaptations of the` invention may be made, over and beyond and in distinctionfrom the specilic disclosure of the drawing and the description just made, in y adapting the invention to varying conditions of use and service and to obtain the varying objects and purposes, all within the true spirit of the invention.

Having thu-s disElosed our invention, we claim and desire to secure by Letters Patent: 1. Plaster board or'the'like, comprising a body provided with a surface "covering which is in part interrupted, said body at the Zone of such interruption being waterproofed.

'2. Plaster board or the like, comprising a body provided with a surface covering which is in part interrupted, said body at thezo-ne of such interruption being water' proofed; said surface covermg being likewise water-proofed.

3. Flaster` board or the like, comprising a body portion and facial covering, said facial covering being'interrupted, and said plaster board being Water-proofed at said i zonev of interruption, atthe ends or edges, and at. the surface covering.

Lt. :Plaster board or the like, comprising a body portion and a surface covering, the surfacecovering being yinterrupted and the body portion formed to interlock with the plastic wall material, and said body portion where soformed being water-proofed.A

5. Plaster board or the like, comprising' I a body portion and a surface hovering, the

surface covering being interrupted and the body portion formed to interlock with thi;J plastic wall material, and said body portion where so formed being water-proofed; said surface covering being likewise waterproofed.

.6. Plaster board or thel like, provided with water-proofe'd. v

a recess for interlocking with a plastic wall material; 'the wdalls of 'said recess bemg water-proofed; said recess extending through the plaster board.

8. Plaster board or the like, provided with a reoessfor interlocking with a plastic wall material; the walls of said recess being l 7. Plaster board'or thelike,fprovided with 'a recess for interlocking with a plastic wall .raar

plaster board and having roughen'cd m S. Master board m' Hw kc, gn'oVd with :L leceSs 'oxf ntm'lwcking with a pzmstc 'wnl material; the Walls m said a'ecss ming' wntmwproof; said News @monding through alle plaster gozu'd mld heaving' ta pared Wuls. l

l0. Pnster board ncluding 'fzwin shouts, pasoc ler between 15h@ shcts (me 0f be sadsheets being performed and the pastic ler being exposed through the vperfomasons, :md Water-@roofing applied to th@ @xposed portions o'f the plastic lle'.

En testimony whereof We have signed om' names to this spmaificaton in the presence rf @W0 subScb-ng' witnesses..

JHN SUHUMACHER JSEPH IE. S@HUB/LAQHER,K Witnesses f WVILMS S, MH'CHELL, JENNIE SHUT@ 

